EP 1347448 B1 20051123 - Optical recording medium and optical recording process using the same
Title (en)
Optical recording medium and optical recording process using the same
Title (de)
Optisches Aufzeichnungsmedium und zugehöriges Aufzeichnungsverfahren
Title (fr)
Support d'enregistrement optique et procédé d'enregistrement utilisant ledit support
Publication
Application
Priority
- JP 2002080057 A 20020322
- JP 2002273670 A 20020919
- JP 2002096709 A 20020329
Abstract (en)
[origin: EP1347448A1] An optical recording medium having two recording layer structures (101,201) which includes a cover substrate (100), a grooved substrate (200), a first recording layer structure (101), an intermediate layer (108), a separation layer (109), and a second recording layer structure (201). In the optical recording medium, the two recording layer structures (101,201) include a first recording layer (101) structure, and a second recording layer structure (201) between the substrates (100,200), the first recording layer structure (101) includes, in this order, a first protective layer (102), a first recording layer (104), a second protective layer (106), a first reflective layer (107), the second recording layer structure (201) includes, in this order, a third protective layer (202), a second recording layer (204), a fourth protective layer (206), a second reflective layer (207), and a ratio of a thickness of the first recording layer structure (101) and a thickness of the intermediate layer (108) is 0.2 to 1.0. <IMAGE>
IPC 1-7
IPC 8 full level
G11B 7/007 (2006.01); G11B 7/24038 (2013.01); G11B 7/24079 (2013.01); G11B 7/243 (2013.01); G11B 7/00 (2006.01); G11B 7/0045 (2006.01); G11B 7/258 (2013.01)
CPC (source: EP US)
G11B 7/24038 (2013.01 - EP US); G11B 7/24079 (2013.01 - EP US); G11B 7/243 (2013.01 - EP US); G11B 7/00454 (2013.01 - EP US); G11B 7/258 (2013.01 - EP US); G11B 2007/0013 (2013.01 - EP US); G11B 2007/24308 (2013.01 - EP US); G11B 2007/2431 (2013.01 - EP US); G11B 2007/24314 (2013.01 - EP US); G11B 2007/24316 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
EP 1347448 A1 20030924; EP 1347448 B1 20051123; DE 60302378 D1 20051229; DE 60302378 T2 20060803; ES 2252567 T3 20060516; US 2004001418 A1 20040101; US 2005244604 A1 20051103; US 7012878 B2 20060314; US 7372800 B2 20080513
DOCDB simple family (application)
EP 03006474 A 20030321; DE 60302378 T 20030321; ES 03006474 T 20030321; US 17617905 A 20050707; US 39454703 A 20030321